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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Significant Accounting Policies [Line Items]      
Capitalized costs $ 14,495 $ 8,269 $ 161,553
Maximum reserves sold from cost center not expected to result in significant alteration (less than) 25.00%    
Percentage depletion rate of reserves (greater than) 0.10    
Interest capitalized during period $ 300 700  
Natural gas balancing liability 1,400 1,100  
Internal Costs      
Significant Accounting Policies [Line Items]      
Capitalized costs $ 500 $ 700 $ 5,700
Buildings and structures | Minimum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 7 years    
Buildings and structures | Maximum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 39 years    
Equipment | Minimum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 1 year    
Equipment | Maximum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 27 years